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Dexter Laundry WCN40AA - Troubleshooting Machine Performance Issues; Water Flush, Tumble, and Vibration Issues; Spin, Start Capacitor, and Solid State Switch Issues

Dexter Laundry WCN40AA
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Symptom Probable Cause Suggested Remedy
Water does
not ush
softener
compart-
ment.
Water Valve Coil Check coil continuity at terminals and replace if no continu-
ity.
Water Inlet
Screens
Check water inlet screens for blockage and clean if neces-
sary.
Water Check to insure that water is turned on and operating.
Pressure Switch Check pressure switch continuity between terminals #1 &
#4. If no continuity, check · pressure switch hose for ob-
struction. If hose okay, change pressure switch.
Timer Advance machine to nal rinse and check for voltage at wht/
blue wire coming from timer. If no voltage, replace timer.
Machine
does not
turn
R2 Spin Relay Check continuity between terminals #13 & #14 on R2 relay.
Wash Speed
Capacitor (Single
Phase Only)
Check capacitor and replce if failed.
Machine
tumbles in
one direc-
tion
Reversing Timer Check to see that reversing timer is running. Check for al-
ternating 120VAC at orange/green and at brown/white from
reversing timer to signal reversing operation to wash relays.
If not running or no voltage, replace reversing timer.
Tumble Relays Check R1A and R1B tumble speed relays. If one does not
close during tumble speed, check coil continuity and power
to the relay. If 120VAC to relay and no coil continuity, re-
place relay.
Excessive
vibration
Mounting System Check these areas: • Strength of mounting structure, con-
crete or base. • Mounting bolts may be loose and need
tightening.
Drive Belt Worn drive belt can cause vibration and noise.
Loading Note: Small loads contribute to out of balance loading and
increase vibration.
Machine
does not
spin
Spin Relay Check spin relay coil for continuity, replace if
no coil continuity. Check relay contacts, replace if
no continuity.
Pressure Switch Check pressure switch for continuity across terminals #21 &
#22 indicating pressure switch has reset to the empty posi-
tion. If no continuity, change pressure switch.
Spin Start Capaci-
tor (Single phase
only)
Check capacitor and replace if failed.
Solid State Start
Switch (Single
phase only)
Clamp an ammeter around either single lead wire to the
start capacitor (capacitor with plastic case). The switch
should show starting current ow in the capacitor circuit mo-
mentarily at the start of spin. Continuous current ow means
that the electronic start switch is stuck on and has failed. No
current ow means that the switch is open and has failed. If
the switch has failed, replace it.
Common Troubleshooting Solutions
Symptom Probable Cause Suggested Remedy
Machine
starts and
does not
operate
Reversing Timer Check to see that reversing timer is running. Check for
alternating 120VDC at orange/green but and at brown/white
from reversing timer to signal reversing operation to wash
relays. If not running or no voltage, replace reversing timer.
Machine
does not
stop
Coin accumulator Check for continuous output from terminal where orange-
white wire connects to accumulator. If so replace accumula-
tor.
Water leak-
age around
loading door
Door Adjustment Door may need adjustment due to abuse or wear. Check
tightness around perimeter using a dollar bill. Adjust left
to right tightness by shims at door lock or hinge side. It is
important to center gasket to tub opening before tighten-
ing door to hinge bolts. Chalk may be used on tub front
to show point of contact with tub. If gasket is deformed,
worn, or damaged, replace. Refer to parts section for door
gasket expander kit.
Common Troubleshooting Solutions
60 61
Part # 8533-035-002 4/22 Part # 8533-035-002 4/22
Machine
Mounting
Installation
& Operation
Trouble-
shooting
Machine
Service
Electrical
Wiring
Parts
Data
Coin
Handling
Maintenance

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